Automatic spray nozzle valve for tubular spray bars



Oct. 16, 1951 c. s. KOLBACH 2,571,583

AUTOMATIC SPRAY NOZZLE VALVE FOR TUBULAR SPRAY BARS Filed Nov. 16, 1948 Inventor Charles 6. Ko/bach Patented Oct. 16 1951 Uurrso STATES PATENT orricr.

AUTOMATIC SPRAY NQ ZZ'LE VALVE FOR, TUBULAR SPRAY BARS Charles G. Kol bach, Union, N. J.

Application November 16, 1948,-Serial No. 60,194

3 Claims.

The present inventionrelates to new and usefull circulating spray bars of bituminous street and highway sprayers.

An important object of the invention is to provide a spray nozzle valve which is automatically opened and closed by a rotary movement of the tubular spray bar of the spraying machine whereby to eliminate the use of individual valve control levers, links and similar mechanism commonly employed for opening and closing the valves.

A further object of the invention is to provide an automatic spray nozzle valve for use with bituminous spraying machines which eliminates the possibility of dripping of the liquid after cutting 01f of the valve and which includes means for adjusting the volume of liquid supplied to the nozzle of the sprayer.

A still further object is to provide a device of this character of simple and practical construction, which is efficient and reliable in operation, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a perspective view of a rotary tubular spray bar showing the spray nozzles attached thereto.

Figure 2 is an enlarged transverse sectional view taken substantially on a line 2-2 of Figure 1 and Figure 3 is a side elevational view with parts broken away and shown in section and illustrating a modified construction for attaching the valve to the spray bar.

Referring now to the drawing in detail wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention, the numeral 5 designates a tubular spray bar of a type used with bituminous street and highway sprayers and formed with a plurality of longitudinally spaced apart openings 5 at one side to which an elongated body I is welded or otherwise suitably secured in a substantially tangential position.

The body 1 is formed with a chamber 3 longitudinally thereof and provided at its side next to the spray bar 5 with an inlet opening 9 and a vent opening I0.

The end of the chamber 8 adjacent the vent opening I0 is closed by a threaded plug I] and the opposite end ofv the chamberB is formedwith ayalve seat 12 fora port l3 leading from. the chamber 8 to one end of a passage l4 extending longitudinally in the body 1 to an opposite end thereof adjacent the plug H, the passage l4 being provided at its end adjacent plug II with a spray nozzle l5 threaded into the end of the body. A free or captive valve I6 is positioned in chamber 8 and gravitates into a position on the plug I! when the spray bar 5 is rotated into a position with the spray nozzle l5 facing downwardly as shown by the full lines in Figure 2 of the drawing, the valve l6 gravitating into a position to engage valve seat l2 for closing port l3 when the spray bar 5 is rotated to face the spray nozzle l5 upwardly as shown by the dotted lines in Figure 2.

The end of the body 1 opposite from spray nozzle l5 and adjacent the outlet port 13 is provided with a threaded plug l I formed with a beveled inner end [8 for seating on a valve seat l9 at the outer end of outlet port l3.

The plug I! may be adjusted to regulate the volume of liquid passing from chamber 8 into passage I4 for discharge from the nozzle I 5 and when it is desired to completely out 01f one of the spray nozzles IS, the plug I! is threaded inwardly its maximum distance to engage the beveled inner end l8 with the valve seat iii.

In Figure 3 of the drawing, the combined spray head and valve body 20 is formed with an externally threaded stem 2! at one side of the body for threading into a nipple 22 suitably secured to the side of the spray bar 23. The stem 2| is formed with the inlet opening 24 and vent opening 25.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the device will be quite a parent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shown and described a preferred embodiment of the invention, the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claims.

Having described the invention, what is claimed as new is:

1. A spray head comprising a reversible elongated body, a spray nozzle in one end of the body, a chamber in the body connected to a liquid supply through an inlet in one side of the body, a valve seat in the chamber at the end of the body opposite from the nozzle, a captive valve in said chamber, and a passage in the body leading from the valve seat of the chamber to the nozzle, said valve opening and closing the passage when the body is reversed from one ,vertical position to the other.

2. A spray head comprising a reversible elongated body, a spray nozzle in one end of the body, a chamber in the body connected to'a liquid supply through an inlet in one side of the body, a valve seat in the chamber at the end of the body opposite from the nozzle, a passage in the body leading from the valve seat of the chamber to the nozzle, an automatic valve for the passage, said valve opening and closing the passage when the body is reversed'from one vertical position to the other, and an independent manual valve for the passage.

l 3. A spray. head comprising a reversible elongated body, a spray nozzle in one end of the .body, a chamber in the body connected to a liquid supply through an inlet in one side of the REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,218,879 Luzzi Mar. 13, 1917 1,490,522 Stocker Apr. 15, 1924 1,658,320 Wittenberg Feb. 7, 1928 1,725,581 Hendricks Aug. 20, 1929 2,197,231 Walker Apr. 16, 1940 FOREIGN PATENTS Number Country Date 254,992 Italy Oct. 3, 1927 

